Don't Trust Single Psychology Papers

Updated: 2026.05.05 1M ago 2 sources
Published claims in psychology should be treated as provisional until multiple independent replications confirm them; Lee Jussim argues that replication failures and downstream misuse mean a large share of published psychological claims are likely false. The policy and media implication is that single studies should not drive public policy, high‑profile reporting, or educational curricula without corroboration. — If adopted, this precautionary stance would shift how journalists, policymakers, and educators cite psychological research, reducing policy mistakes based on fragile findings.

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Tuesday assorted links
Tyler Cowen 2026.05.05 60% relevant
Tyler Cowen's link noting 'Rachel Glennerster defends RCTs in development economics' connects directly to the methodological debate this idea tracks: whether single high‑profile randomized controlled trials (RCTs) should be taken as decisive evidence or treated cautiously in light of replication and incentives; Glennerster (actor) defending RCTs is a concrete prompt for that discourse.
~75% of Psychology Claims are False - by Lee Jussim
2026.05.04 100% relevant
Lee Jussim's essay claims an empirical run rate of unreplicable findings around 50% and uses that (plus secondary mechanisms) to estimate ~75% of psychology literature claims are false.
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